IKVM.Internal.CodeEmitter.OptimizeLdcI8 C# (CSharp) Method

        private void OptimizeLdcI8(int index)
        {
            long value = code[index].ValueInt64;
            OpCode opc = OpCodes.Nop;
            switch (value)
            {
                case -1:
                    opc = OpCodes.Ldc_I4_M1;
                    break;
                case 0:
                    opc = OpCodes.Ldc_I4_0;
                    break;
                case 1:
                    opc = OpCodes.Ldc_I4_1;
                    break;
                case 2:
                    opc = OpCodes.Ldc_I4_2;
                    break;
                case 3:
                    opc = OpCodes.Ldc_I4_3;
                    break;
                case 4:
                    opc = OpCodes.Ldc_I4_4;
                    break;
                case 5:
                    opc = OpCodes.Ldc_I4_5;
                    break;
                case 6:
                    opc = OpCodes.Ldc_I4_6;
                    break;
                case 7:
                    opc = OpCodes.Ldc_I4_7;
                    break;
                case 8:
                    opc = OpCodes.Ldc_I4_8;
                    break;
                default:
                    if (value >= -2147483648L && value <= 4294967295L)
                    {
                        if (value >= -128 && value <= 127)
                        {
                            code[index] = new OpCodeWrapper(OpCodes.Ldc_I4_S, (sbyte)value);
                        }
                        else
                        {
                            code[index] = new OpCodeWrapper(OpCodes.Ldc_I4, (int)value);
                        }
                        if (value < 0)
                        {
                            code.Insert(index + 1, new OpCodeWrapper(OpCodes.Conv_I8, null));
                        }
                        else
                        {
                            code.Insert(index + 1, new OpCodeWrapper(OpCodes.Conv_U8, null));
                        }
                    }
                    break;
            }
            if (opc != OpCodes.Nop)
            {
                code[index] = new OpCodeWrapper(opc, null);
                code.Insert(index + 1, new OpCodeWrapper(OpCodes.Conv_I8, null));
            }
        }